Agriculture: In a since-deleted re-tweet, Trump blamed Ben Carson’s early lead in the Iowa polls on… GMOs. “Too much#Monsanto in the #corn creates issues in the brain?”

Climatology: Despite trying to build a seawall to protect his own Irish golf course, Trump has alleged that climate change is a hoax created by the Chinese to make America less competitive. (It’s not.)

The concept of global warming was created by and for the Chinese in order to make U.S. manufacturing non-competitive.